Electronics Components
A friend of mine tells me that he wants to buy some common electronic components to replace in an existing circuit because some of the original components have been broken in the circuit, so he asks me for help. Well, for such condition, I think there are some key parameters should be kept in mind. The following will you tell you the details. The first you should do is calculated the expected voltage across and current through each components in the schematic. With the voltage, current and wattage of the circuit you will be know more about the components.
When you buy a resistor, consider the most important parameters such as resistance value, tolerance, and wattage rating. But for buying capacitors, determine if they are polarized. The polarized capacitors can only operate where one side is a higher voltage than the other side. Usually for DC, the polarized capacitors are often the most cost-effective way to achieve high capacitance at reasonable cost. Besides this, you should determine for each capacitor is polarized or not, the capacitance value and voltage rating. If use inductors in the circuit, the tolerance and wattage considerations are much the same as with resistors. The value will have some impact. Then we discuss the diodes. Know for their voltage seen, current carried, voltage drop and Peak Inverse Voltage (PIV) rating because PIV is the limit of voltage the diode can be take when reverse biased without breaking down. The common electronic components are resistors, capacitor, diodes, etc. And you can choose other common ones such as transistors, FETs and integrated circuits by the function needed. Be note these things including switching speed, voltage and current rating, power rating and so on.
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